test1:
120
test2:
Warning: imagecolorexact(): supplied argument is not a valid Image resource in /var/www/sdb/a/9/mitirapa/test2.php on line 14
test3:
Warning: imagecolorat(): supplied argument is not a valid Image resource in /var/www/sdb/a/9/mitirapa/test2.php on line 20
test4:
Warning: imagecolorclosest(): supplied argument is not a valid Image resource in /var/www/sdb/a/9/mitirapa/test2.php on line 26